diff --git a/laravel/str.php b/laravel/str.php
index b01d397b..a0d23407 100644
--- a/laravel/str.php
+++ b/laravel/str.php
@@ -118,7 +118,7 @@ public static function limit($value, $length = 100, $end = '...')
 
 		if (function_exists('mb_substr'))
 		{
-			return mb_substr($value, 0, $length).$end;
+			return mb_substr($value, 0, $length, Config::get('application.encoding')).$end;
 		}
 
 		return substr($value, 0, $length).$end;
diff --git a/tests/Cases/StrTest.php b/tests/Cases/StrTest.php
new file mode 100644
index 00000000..55b47830
--- /dev/null
+++ b/tests/Cases/StrTest.php
@@ -0,0 +1,51 @@
+<?php
+
+class StrTest extends PHPUnit_Framework_TestCase {
+
+	public function test_lower()
+	{
+		$this->assertEquals('something', Laravel\Str::lower('SomeThing'));
+		$this->assertEquals('τάχιστη', Laravel\Str::lower('ΤΆΧΙΣΤΗ'));
+	}
+
+	public function test_upper()
+	{
+		$this->assertEquals('SPEAK LOUDER', Laravel\Str::upper('speak louder'));
+		$this->assertEquals('ΤΆΧΙΣΤΗ', Laravel\Str::upper('Τάχιστη'));
+	}
+
+	public function test_title()
+	{
+		$this->assertEquals('This Is A Test', Laravel\Str::title('this is a test'));
+		$this->assertEquals('Τάχιστη Τάχιστη', Laravel\Str::title('τάχιστη τάχιστη'));
+	}
+
+	public function test_length()
+	{
+		$this->assertEquals(4, Laravel\Str::length('four'));
+		$this->assertEquals(7, Laravel\Str::length('τάχιστη'));
+	}
+
+	public function test_ascii()
+	{
+		$this->assertEquals('Deuxieme Article', Laravel\Str::ascii('Deuxième Article'));
+	}
+
+	public function test_random()
+	{
+		$this->assertEquals(5, strlen(Laravel\Str::random(5)));
+	}
+
+	public function test_limit()
+	{
+		$this->assertEquals('Thi...', Laravel\Str::limit('This is a string of text', 3, '...'));
+		$this->assertEquals('This is&nbsp;', Laravel\Str::limit('This is a string of text', 7, '&nbsp;'));
+		$this->assertEquals('τάχ', Laravel\Str::limit('τάχιστη', 3, ''));
+	}
+
+	public function test_limit_words()
+	{
+		$this->assertEquals('This is a...', Laravel\Str::limit_words('This is a string of text', 3, '...'));
+		$this->assertEquals('This is a string&nbsp;', Laravel\Str::limit_words('This is a string of text', 4, '&nbsp;'));
+	}
+}
\ No newline at end of file